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Finding the Fourth Proportional to 388,666.94, 581,683.59 and 239,002.02

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Solution

The fourth proportional to 388,666.94, 581,683.59 and 239,002.02 is: 357,693.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,666.94 : 581,683.59 = 239,002.02 : x
  2. Step 2: Convert to fraction form
    388,666.94/581,683.59 = 239,002.02/x
  3. Step 3: Cross multiply
    388,666.94x = 581,683.59 × 239,002.02
  4. Step 4: Simplify right side
    388,666.94x = 139,023,553,010.85
  5. Step 5: Solve for x
    x = 139,023,553,010.85/388,666.94
  6. Step 6: Final answer
    x = 357,693.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.